Replication
ŸStreams asynchronously maintains multiple copies of objects via automatic apply
–Identical objects
–Related via a transformation or function
ŸStreams automatically captures, propagates,  and applies DML and DDL changes
–Detects and optionally resolves conflicts
ŸSupports flexible data movement and subsetting
ŸGateways and APIs for heterogeneous support
ŸCompatible with Materialized Views